The document provided at
cobblerd.org is sufficient for get running Cobbler.
Here is are simple steps to install n configure Cobbler
=> Install your CentOS 6 system
=> For now you donot enable the selinux and iptables. Make sure these are disabled.
=> Now install cobbler with yum localinstall cobbler-xxxx it will also install all the dependency packages
=> After it installed everything, start the cobblerd daemon n run cobbler check command n check for the missing packages and configurations and fix it
=> If you like to use the web front-end, download the cobbler-web package and install it.
Hoping this will help you.